diff --git a/.travis.yml b/.travis.yml
index 2ba6f18f2..194ca6396 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -31,7 +31,6 @@ matrix:
       script:
         - unset -f cd # workaround for https://github.com/travis-ci/travis-ci/issues/8703
         - brew update
-        - brew install caskroom/cask/brew-cask
         - brew cask install osxfuse
         - go run build/ci.go install
         - go run build/ci.go test -coverage $TEST_PACKAGES